Are you previewing the files during download & if so, do they play then? Which player are you using?
Are you using your AV program to scan files that you've downloaded, before you open them? You should
If you're using LW's player, disable that (tools > options > player) & see whether the songs play when you use another player.
CODECs list for Movies/Audio/ Alternate players / Video help forums/ video-mp3 fixers
VLC Media Player is a nice one to try if you decide to Dump the LW Player.
Hope this Helps
Make sure that you're not downloading Infected, Corrupt, or Fake Files.
Files that are 3462kb's and 5611kb's are known to Viruses and they will ALWAYS show up on ANY Search performed.
* WARNING: Viruses on network you should be aware of! *
Check the files with Bitzi. People don't rate music files too often, but if the files are bad people may have rated them to warn other users.
How to use Bitzi
Hope this Helps.